Stop-motion for looms



c. F. HELDERMAN.

STOP MOTION FOR LOOMS.

APPLICATION FILED SEPT. 26, 1919.

13262620 v Patented Dec. 30,1919.

2 SHEETS-SHEET I.

C. F. HELDERMAN. STOP MOTION FOR Looms. APPLICATION FILED SEPT. 26?I919.

Patented Dec. 30,1919.

2 SHEETSSHEET 2 (lilac n STATES are t T Fl Go 'GHARLES'F. HELDERMAN, 0FLEAKSVILLE, NORTH CAROLINA, ASSIGNOR OF ONE- THIRD T0 ROYAL J. MOORE ANDONE-THIRD TO D. FRANK KING, JR, BOTH OF LEAKSVILLE, NORTH CAROLINA.

sror Mo'rIoN r03 LOOMS.

Specification of Letters Patent. Patented Dec, 30, 19119.

Application filed September 26, 1919. Serial No. 326,469.

To all whom it may concern:

Be it known that 1, CHARLES F. HELDER- MAN, a citizen of the UnitedStates, residing at Leaksville, in the county of Rockingham -and Stateof North Carolina, have invented form its accustomed function, therebypreventing injury to the pattern cards and the waste of material by theloom continuing to operate without functioning properly.

The drawings illustrate a preferred embodiment of the invention.However, it.is .to be understood that in adapting the same to meetdiflerent conditions, various changes in the form, proportion, and minordetails of construction may be resorted to without departing from thenature of the invention asclaimed hereinafter.

Referring to the drawings hereto attached.

Figure 1 is a diagrammatic view of a jacquard machine of ordinaryconstruction illustrating the application of the invention.

Fig. 2 is a fragmentary view showing more clearly the stop motion,whereby the loom is automatically thrown out of action when the jacquardmechanism becomes disarra-nged.

Fig, 3 is a detail View of a portion of a stop mechanism.

. Fig. 4 is a sectional detail of a portion of the jacquard cylinder andneedle board, showing the parts on an enlarged scale.

Fig. 5 is a detail view of a portion of the needle board, showing theyoke, whereby the needles of the stop motion are connected.

Fig. 6 is a detail view of a portion of the jacquard cylinder, showingthe peg by means of a belt yieldably mounted thereon for cooperationwlth the pattern cards and needle" board.

Fig. 7 is a sectional detail on the line 77 of Fig. 6 looking to theleft, as indicated by thearrow.

Corresponding and like parts are referred to in the followingdescription and ndicated in the several views of the drawings by likereference characters,

The invention is adapted for looms of the jacquard type or provided withjacquard mechanism. The frame of the loom is indicated generally at 1and 2 is the main shaft to which the driver power is adapted to beapplied in any well known manner I pulley 3. A clutch 4: 1s spllned tothe shaft 2 and is adapted to connect the belt pulley 3 with the mainshaft 2. 'The clutch 4 is adapted to be operatedjby means of a shipperlever 5 which is plvotally supported intermediate of its ends andadapted to be controlled by means of a hand lever 6. A rod 7 projectslaterally from the frame 1 and supports an expansible helical spring 8which normally exerts an inward pressureon the end of the lever 5.Toggle links 9 are interposed between the free end of the shipper lever5 and a collar 10 secured to the inner end of the rod 7 A link 11connects the toggle links 9 with the lower end of the operating lever 6.When the toggle links 9 are in alinement, as indicated most clearly inFig.

3 the clutch member 4 is moved into clutched.

engagement with the pulley 3-andconnects said pulley with the main shaft2. When the toggle links 9 are moved outward away from the rod 7 attheir inner jointed ends the shipper lever 5 is actuated by the spring 8to throw the clutch 4 clear of the drive pulley 3 with the result thatthe loom is thrown out of action. means may be provided for breaking thejoint of the toggle links 9, the mechanism illustrated is preferredbecause of the extreme simplicity thereof. A rod 12 is provided atitslower end with a wedge 13 which is adapted to operate between the rod7 and the jointed ends of the toggle links 9. Under normal conditions,the

wedge-shaped end 13 of the rod 12 is disposed below the rod 7 and togglelinks 9,

\Vhile any suitable as indicated most clearly in Figs. 1 and 2. Shouldthe jacquard mechanism become disarranged, the rod l2 is elevated tocause its wedge-shaped end 13 to come between the rod 7 and jointed endsof the toggle links 9, thereby breaking the joint of the latter so asthe spring 8 comes into play to operate the shipper lever 5 and throwthe loom out of action. It should be borne in mind that the lever 6,when operated throws the loom into action by causing the toggle links 9to aline, as indicated in Fig. 3, but when the rod 12 is moved upward,the toggle links 9 break joint outwardly, thereby permitting the spring8 or equivalent means to come into play to automatlcally throw the loomout of action.

The jacquard mechanism comprises the usual griif or lifter bars 14 andhooks or lifters 15 and needles 16 in coiiperative relation therewith toeffect lateral movement of the upper hooked ends of the lifters 14 withreference to the grill bars. Certain needles, as 16* are adapted'to beactuated by each pattern card in succession, so as to throw the hooks orlifters 15 controlled thereby out of the path of the cooperating griffbars, thereby preventing operation of the hooks 15 so long as thejacquard mechanism is in normal'working position. However, should thejacquard mechanism from any cause become disarranged, the needles 16will not be operated and as a consequence, the hooks 15 will be liftedby the coacting gliff bars and efiect a stopping of the loom by throwingthe same out of action. Strands. or like connections 17 connect thelower ends of the hooks 15 with an arm 18 of a rock shaft 19, said rockshaft being provided with an arm 20 to which the rod 12 is connected.When the rock shaft 19 is actuated by the jacquard mechanism, the loomis automatically thrown out of action by the upward movement of the rod12 in the manner herein stated.

The jacquard cylinder is indicated at 21 and its faces or sidescorrespond with the cards 22 ofthe pattern chain. The pattern chains aresupported by the usual rack 23 and the cards are laced or connected inany preferred way, so as to formthe usual pattern chain which cooperateswith the cylinders 21 and needles 16. The needle board or uide 24 isprovided at or near each end wit an opening 25 in which is looselyfitted a plate or disk 26 constituting a yoke, whereby the needles 16are connected. The yoke 26 may be of any construction and is free tomove in the opening 25 and the needles 16 may be connected thereto inany manner, so as to move therewith. Under normal conditions, that is,when the jacquard mechanism is working properly, the hooked ends of thelifters 15 occupy a position to be engagedby the coacting grid bars 14,but are moved laterally out of the path of the cooperating griff bars bymeans of a. peg 27 carried by the jacquard cylinder 21. Asshown mostclearly in Fig. 4, the projecting end of the peg 27 is adapted to passthrough an open ing in the pattern card in register with the opening 25,so as to press upon the yoke 26 and move the needles 16 to effect alateral movement of the hooked ends of the lifters 15 to throw said endsout of the path of the coacting grifi' bars. Should the pattern vchainbecome disarranged from any cause,

Each of the cylinders 21 is of polygonal form and each side or facecorresponds with a pattern card and is provided with pegs 27.

to register with openings in the pattern card under normal conditions,that is, when the jacquard mechanism is working properly. Each peg 27 isyieldably mounted so as to be pressed inward when not registering withthe opening in the pattern card. Under normal conditions, the peg 27projects and passes through the opening of the pattern card and into theopening 25 of the needle board 24 and engages the yoke 26, therebyoperating the needles 16 and the lifters 15*. Each peg 27 has a shank 28which is mounted in a bracket 29 of a plate 30 let into a mortise formedin the face 'of the cylinder. The plate 80 is adjustable to admit ofproperly setting the pegs and allow for variations in workmanship. Asshown most clearly in Figs. 6 and 7, the plate 30 is formed with alongitudinal slot 31 through which passes a fastening 32, by eans ofwhich the plate is secured to the cylinder in the adjusted position.

For single machines the cylinder 21 will be provided near each end witha peg 17, it being understood that each face or side of the cylinderwill be supplied with two pegs, each being located at or near the end ofthe cylinder. Double acting machines will have each face of the jacquardcylinder provided with four pegs, two being located at or near the endsand two intermediate of the ends. So long as the jacquard mechanism isworking properly, the lifters 15 will be moved laterally to clear thecooperating grifi bars at each successive card of the pattern chain.However, should the lacing or connecting means between pattern cardsbreak or the pattern cards become disarranged from any cause, theopening therein provided to register with the pegs 27 failing toregister therewith, said pegs will be thrown out of operative positionby being pressed inward and thereby failing to operate the needles 16the loom will be thrown out of operation in the manner herein fullydescribed. However, should there be an absence of a pattern card fromany cause, or the pattern chain .be omitted, the stop mechanism will notbe brought into play, and the loom when in motion will continue inoperation since the pegs 27 will engage the yoke and operate the needles16 and the lifters 15.

Having thus fullydescribed my invention, what- I claim as new and desireto secure by Letters Patent is 1. In pattern mechanism for looms of thejacquard type, a lifter, a stop mechanism adapted to be actuated by thelifter, a "grifi' bar in cooperative relation with the lifter, a needlein cooperative relation with the litter and means carried by thejacquard cylinder, and operative through the cards of the pattern chainto actuate the needle under normal conditions to throw the lifter out ofthe path of the coacting grifi bar.

2. Stop mechanism for Jacquard looms, 'comprisinga lifter havingconnection with the loom to automatically throw the same out ofactionunder abnormal conditions, a grill bar in cooperative relation with thelifter, a needle coacting with said lifter, and a pegiyieldably'mountedon the jacquard cylinder and adapted to operate-through a card of thepattern chain and actuate the said needle to throw the lifter out of thepath of the coacting grifi bar when the jacquard mechanism is Workingproperly.

3. In stop mechanism 'for Jacquard looms,

alifter having connection with the starting mechanism'of the loom agrill bar in cooperative relation with the litter, an element looselymounted in the needle board and having the said needle connectedtherewith 'and a peg yieldably mounted on the jacquard cylinder andoperable through a card of the pattern chain to actuate said yoke undernormal conditions to throw the lifters outof the path of the cooperatinggrifi' bars.

In testimony whereof I' aflix my signature in presence of two witnesses.

CHARLES F. HELDERMAN.

Witnesses: v Y

' G. C. GAMMoN, T. M. N.

